Toggle bolt door latch



Dec. 3, 1963 J. H. wERNlG ETAL 3,112,946

TGGLE BOLT DOOR LATCH 5 Sheets-Sheet l Filed April 7. 1961 INVENTORJ wref /ZM AT T NEY Dec. 3, 1963 J. H. wl-:RNxG ETAL 3,112,946

TOGGLE BOLT DOOR LATCH Filed April 7. 1961 5 Sheets-Sheet 2 5 Sheets-Sheet 3 Dec. 3, 1963 J. H. wERNlG ETAL ToGGLE BOLT nona LATCH Filed April 7, 1961 Dec. 3, 1963 J. H. wERNlG ETAL 3,112,946

TOGGLE Bour DOOR LATCH 5 Sheets-Sheet 4 Filed April 7, 1961 l l I l gip w114 IIIII /lllllll l/llllllllll",

IN VEN TORJ` fm /z am?, f

AT RNEY DeC- 3, 1963 J. H.wERN1G ErAL 3,112,946

TOGGLE Bom' noos LATCH 5 Sheets-Sheet 5 ATTORN Filed April 7. 1961 3,112,946 Patented Dec. 3, 1963 3,112,946 TGGLE BLT DOOR LATCH James I-I. Wernig, Birmingham, and Stanley D. Cockburn,

Warren, Mich., assignors to General Motors Corporation, Detroit, Diich., a corporation of Delaware Filed Apr. 7, 1961, Ser. No. 101,430 11 Claims. (Ci. 292-223) This invention relates to a vehicle door latch, and more particularly to a vehicle door latch embodying a toggle bolt.

One feature of the invention is that it provides an improved vehicle door latch. Another feature of the in vention is that it provides a vehicle door latch in which all of the latch parts are mounted in a casing which is secured to the outer surface of the jarnb face of the door, certain control apparatus for the latching being mounted on the inner surface of the jamb face of the door. A further feature of the invention is that it provides a vchicie door latch having improved locking means. Still another feature of the invention is that the locking means of the door latch includes a :trip lever and a free wheeling link mounted on the trip lever, said free wheeling link coupling the latch intermittent link to the latch operating lever when the trip lever is in unlocked position, and uncoupling the intermittent link from the operating lever when the trip lever is in locked position. Another feature of the invention is that it provides a door latch having operating means including a pivotally mounted operating lever `and an intermittent link which is pivoted coaxially with and adjacent a surface of said operating lever, the intermittent link having a slot extending radially of its pivotal axis and the operating lever having a slot with a radial stem portion lying in registry with the slot in the intermittent link, and an arm portion extending substantially at a right angle from said stem portion, the locking apparatus including a member having a lug extending through both slots, said lug being out of registry with the arm portion of the slot in the operating lever when the trip lever is in unlocked position, and being in registry with said arm portion when the trip lever is in locked position. A still further feature of the invention is that it includes improved undogging and keyless locking apparatus comprising an undogging lever pivoted coaxially with the locking trip lever and connected thereto by a spring, so that `the two levers normally pivot together, and means for blocking the locking trip lever against `rnovement to unlocked position to accomplish keyless locking of the latch.

Other features and advantages of the invention will be apparent from the following description, having reference to the drawings in which:

FIGURE l is a fragmentary isometric exploded View showing the improved latch, the body mounted striker with which the latch cooperates, and the inside control apparatus for the latch, the striker and the vehicle door upon which the latch and door control apparatus arc mounted being shown in broken lines;

FIGURE 2 is a transverse vertical section through a vehicle door having the improved latch mounted thereon, and showing the outside control apparatus;

FIGURE 3 is an enlarged isometric view of the latch, the latch casing being shown in broken lines;

FIGURE 4 is an isometric view of one of the links of the toggle bolt;

FIGURE 5 is a vertical section teken through the latch along the line 5 5 of FIGURE 6;

FIGURE 6 is a horizontal section through the latch taken along the line 6 6 of FIGURE 5;

FIGURE 7 is a transverse section taken along the line 7 7 of FIGURE 5;

FIGURE 8 is a vertical section taken along the line 3 3 of FlGURE 6;

FlGURE 9 is a transverse section `taken along the line 9 9 of FIGURE 5;

FlGURE i() is a detail section taken along the line 1Q 10 of FIGURE 8;

FlGURE ll is a detail section taken along the line ll-l of FIGURE 5; and

FIGURE 12 is an isometric exploded view of the latch parts removed from the latch casing.

Referring now more particularly to the drawings, an automobile door designated generally as 20 is provided with an outcr panel 2l, an inner panel 22, and a jamb wall 23 connecting the inner and outer panels at the free side of the door. The door 2o is hingedly mounted on an automobile hody in conventional manner, as is well under stood in the art. The door has a stationary gripping handle 24 xedly mounted on its outer panel 21 and provided witn a conventional push button unlatching assembly 26. This assembly includes the push button itself which is identicd by the reference character 28, a push rod 3l? which is axially movable upon depression of the button a bcllcrank 32 which is pivotally mounted at 34 inside the door, and a connecting rod 36. As shown in FIGURE 2, the push rod 30 swings the bellcrank 32 upon depression of the push button 28 so that the oonnecting rod 36 which extends between the bellcrank 32 and the latch moves downwardly.

A conventional key cylinder 33 is mounted in the door outer panel 21 below the location of the push button 28. A conventional type of keycperated tumbler locking mechanism (not shown) is contained inside the key cylinder, and a key operator 4t] projects from the key operated mechanism and terminates in spaced parallel flanges 41 and 42 which receive between them the locking trip lever of the door latch.

The door inner panel mounts a conventional type of remote turn handle, which is not shown in the drawings but which is similar to the handle shown in Cockburn et al. U.S. Patent 2,871,649, and a connecting rod 44 extends from this handle to one arm of a control bellcrank 46 which is pivotally mounted on n frame bracket 47 that is belted to the jamb wall ofthe door. The free bifurcated end of this bellcrank projects out through the opening 48 in the jamb wall 23 of the door. At the belt line of the door there is a conventional garnish molding 50, having an opening therein, through which extends a conventional garnish molding locking button 52, which is connecte-d by a locking rod 54 to a lever 5-6 pivoted on the frame bracket 47. The free bifurcated end of the lever 56 projects out through the door jamb opening 48.

The latch, which is designated generally as 58 in FIG- URES l and 2, is housed in a casing {il} which is bolted onto thc outer surface of the jamb wall 23 of the door, the wall 2,3 being provided with an opening 62 into which the outside control parts of the latch project.

FIGURES 3-11 show Vthe detailed construction of the latch. A mounting shaft designated generally as 64 is mounted between the `front and rear faces of the latch casing 6G and provides a mounting for most of the parts of the latch. The bolt, which is designated generally as 66, comprises two toggle links 68 and 70 which are pivoted together by means of a stud 72 so arranged that the links may move relative to each other between a straight line position as shown in FIGURE 5 and a tripped or broken position in which the knee of the toggle bolt has moved upwardly from the position of FIGURE 5. A bolt toggle spring '74 is connected between the bolt links 68 and 76, and yieldably urges the links toward the straight line lathcing position shown in FIGURE 5, wherein the free end of the link 70 projects down through an opening 6l in the latch casing 60 in position to engage the teeth '76 of the striker 7S which is `mounted in conventional manner on the vehicle body. The bolt link 63 is pivotally mounted on the main mounting shaft 64 so that the bolt is movable as a unit between the latching position shown in FlGURE 5 and an out-of-the-way position wherein both bolt links swing together in a counterclockwise direction from the position shown in FIGURE. 5 to an out-of-the-way position wherein the nose of the bolt link 7G no longer projects into latching engagement with the teeth of the striker 78.

By virtue of this arrangement, when thc door is slammed shut the bolt cams to its out-of-the-way position over the striker teeth 76. A coil spring 80 is connected between an opstanding tab 82 on the bolt link 63 and the latch casing 6G to bias the bolt away from its out-of--the-way position and toward its operative or latching position as shown in FIGURE 5. The `bolt link 63 is also formed with an outside operating abutment 34 which extends above and generally parallel to the mounting shaft 64 and an inside operating abutment 86 which extends below and generally parallel to the shaft 64. A remote lever 88 is piovtally mounted `on the main mounting shaft 64 and is formed with a control arm 90 which extends out through the `latch *easing and has its free end received in the bifurcated end of the remote control bellcrnnk 46. The remote lever titl is also formed with an operating abutment 92 which lies closely adjacent the inside operating abutment S6 of the bolt link 68, and the remote lever is biased iby a spring 94 in a countcrclockwise direction as the parts appear in FGURE 3.

1n order to open the door from the inside, the remote control handle (not shown) is turned to pull on thc rod 44. This swings the bellcrank d6 in a clockise direction in FGURE l moving the remote lever 83 in a clockvff' direction @FIGURE 3) so that the abutment 9;?. on the remote lever 38 picks up the abutment 36 on the bolt link 68 and breaks the toggle bolt at the knee or pivot 72 so that the toggle bolt is tripped from latched position to unlatched position.

Outside operating means includes an operating levcr 96 which is pivotally mounted on the casing 69 by means of coaxial studs 98 and 99. One arm 16GB of the operating lever 96 extends outside the latch casing and projects through the opening `62 in the jamb wall 23 and is connected to the lower end of the push button connecting rod 36. The other arm 162 extends downwardly within the latch casing and is formed with a slot having a vertical stern portion 164 which extends radially ot the pivotal axis of the lever 96 and an arm portion "6 extending substantially at a right angle from the stem portion and i lying on an are drawn about the pivotal axis of the operating lever. The coil spring 94 is connected between the operating lever 96 and the remote lever SS and biases both of these members to the position shown in FlGUElE 3 of the drawing. An intermittent link 110 is pivotally mounted on the mounting stud 99 coaxially with the operating lever 96 and is formed with a `noso portion 112 which, when the intermittent link is swung, picks up the outside operating abutment 84 on the bolt link and breaks the toggle arangement to trip the bolt from latched position to unlatched position. The intermittent link is formed with a vertical slot 114 which extends radially of the pivotal axis of the intermittent link, the stem portion 104 of the slot in the operating lever lying in registry with the intermittent link slot 114. When the outside push button 28 is depressed, the bellcrank 32 is swung to push down on the connecting rod 36, thus swinging the outside operating lever 9-6 in a countercloekwise direction as the parts appear in FIGURE 3. Assuming the intermittent link 110 to be coupled to the outside operating lever so that it moves with said lever, the nose 112 of the intermittent link swings upwardly, picking up the abutment 84 and tripping the bolt.

In order to lock the latch against outside operation. the intermittent link 1l() is uncoupled from the operating tl l) lever 96. The locking means includes a locking trip lever 116 which is pivotally mounted on the main mounting shalt 64 and which is movable between locked and unlocked positions, being yicldably held in either position, as selected, by an over-center spring 118 which is connected between the trip lever 116 and the latch casing 6G. An outside operating arm 126 of the trip lever 116 extends outside the casing 60 and projects through the opening 62 in the door jamb wall 23. The free end of 'this arm is bent at a right angle and is received between the flanges 61 and t2 ol` the key cylinder extension 40 so that turing a proper key in the key cylinder will flip the locking lever between locked and unlocked positions. An inside operating arm 121 projects from the opposite side ofthe pivotal axis of the trip lever 116 and is received in the bifurcatcd free end of the garnish molding lever 56. Depression of the garnish molding button 52 will swing the trip lever 116 from unlocked position to locked position.

A free wheeling link 122 is pivotally mounted on the trip lever 116 on a pivot stud 124. The link 122 is formed with a lug 126 which extends through the slot 114 in the intermittent link and also through the stem 104 of the slot in the operating lever 96, so that normally the free wheeling link couples the intermittent link to the operating lever' and the intermittent link and the operating lever swing together. When the trip lever 116 is in its unlocked position the lug 126 of the free wheeling link 122 is in the upper portion ot the vertical slot and is out of registry with the arm portion 1636 thereof. When the trip lever 116 is moved in a counterclockwise direction in FlGURE 3 to locked position, the lug 126 of the free wheeling link moves down into registry with the arm portion 106 of the slot in the operating lever so that the intermittent link 11() is uncoupled from the operating lever 96. Now upon depression of the outside push button 23 the operating lever 96 merely free wheels and the intermittent link does not swing with the operating lever, so that the bolt 66 is not tripped.

The improved latch incorporates the features of automatic undogging, remote undogging, and "keyless locking." Automatic undogging means that if the latch is inadvertently placed in locked condition while the door is open, the latch parts will be moved back to unlocked position when the door is slammed shut. Remote undogging means that if the latch is placed in locked condition, operation of the inside remote handle to open the door from the inside will move the latch parts back to unlocked position. ln other words, when the door is locked it is only locked against outside operation. Keyless locking means that, it desired, and upon the perlormance of a conscious act by the operator, the automatic undogging feature may be overridden and the door may be slammed shut and locked without use of a key. The improved latch provides a novel means for achieving keyless locking.

Pivotally mounted on the main mounting shaft 64 coaxially with the trip lever 116 is an undogging lever 128. This lever is yieldably connected to the trip lever by means of a centering spring 13() which is connected between a lug 128e on the undogging lever and a lug 116e on the trip lever 116. Normally the undogging lever 128 and the trip lever 116 swing together, since the centering spring 130 is quite strong. However, if the trip lever is blocked against swinging movement, the undogging lever still may swing against the yielding force of the centering spring 130.

If the latch parts are placed in locked position when the door is open either by depression of the garnish molding button 52 or by operation of a proper key in the key cylinder 38 and then the door is slammed shut, automatic undogging will occur and the latch parts will be shifted back to unlocked position. As the door is slammed saut the nose of the bolt link 7G will engage the teeth 76 of the striker and the bolt will be cammed as a unit (without breaking the toggle) to an out-of-the-way position against the force of the bolt spring 80. As the bolt swings to its out-of-the-way position, inside operating abutment 86 on the bolt link 68 picks up the undogging lever 128, swinging it clockwise as the parts appear in FIGURE 3. Because of the yieldable interconnection between the undogging lever and the trip lever 116 through the relatively strong centering spring 130, the trip lever will be swung from locked position to unlocked position. Remote undogging is achieved in the same manner. When the door is opened from the inside the remote lever 88 picks up the abutment 86 on the bolt and breaks the toggle, tripping the bolt to unlatched position. During this upward movement the abutment 86 picks up the undogging lever 128 in the manner just described.

If desired the operator may, by the performance of a conscious act, override the automatic undogging operation and lock the door from the outside without a key. If the latch parts are in locked position and the door is to be slammed shut and locked without a key, the operator merely depresses the outside push button 28 during the time the door is being slammed shut. Depression of the push button swings the operating lever 96 counterclockwise so that the lug 126 on the free wheeling link 122 enters the arm portion 106 of the slot in the operating lever. This blocks the trip lever 116 against movement to its unlocked position. However, the undogging lever 128 may swing against the yielding force of the centering spring 130.

An important feature of the improved latch is that the latch itself is mounted on the outside surface of the jamb wall of the door, this being made possible because of the small size of the latch due to the novel combination and arrangement of the parts as heretofore described. Since the latch in its casing is mounted on the outer surface of the jamb wall of the door it is not necessary to remove the door inner panel in order to service the latch, and initial assembly is greatly facilitated since only the inside and outside latch control means are mounted in the door while the latch casing which mounts the bolt, the inside operating means, the outside operating means, and the locking means is simply bolted or screwed to the outer surface :of the jamb wall of the door,

While we have shown and described certain embodiments of our invention, it is capable of many modifications. Changes, therefore, in the construction and arrangement may be made without departing from the spirit and scope of the invention as set forth in the appended claims.

We claim:

l. A vehicle door latch of the character described, comprising: a bolt movable between latched and unl'atched positions; means yieldably holding said bolt in latched position; operating means including an operating lever Iand an intermittent link which is adapted, upon movement, to engage said bolt and move it from latched to unlatched position; outside unlatching means for swinging said operating lever; and locking means including a trip lever which is movable between locked and unlocked positions tand a free wheeling link mounted on said trip lever for bodily movement therewith and for pivotal movement relative thereto, said free wheeling link coupling said intermittent link to said operating lever when the trip lever is in unlocked position, and uncoupling said intermittent link from said operating lever when the trip lever is in locked position.

2. A vehicle door latch of the character described, comprising: a bolt movable between latched and unlatched positions; spring means yieldably holding said bolt in tlatched position; operating means including an operating lever and a pivotally mounted intermittent link which is adapted, upon swinging movement, to engage said bolt and move it from latched to unlatched position; outside unlatching means for swinging said operating lever; and locking means including a trip lever which is movable between locked and unlocked positions and a free wheeling link mounted on said trip lever for bodily movement therewith and for pivotal movement relative thereto, said free wheeling link coupling said intermittent link to said operating lever when the trip lever is in said unlocked position and uncoupling said intermittent link from said operating lever when the trip lever is in locked position.

3. A vehicle door latch of the character described, comprising: a bolt comprising two toggle links movable relative to each other between latched and unlatched positions; spring meuns yieldably holding said bolt in latched position; operating means including an operating lever and a pivotally mounted intermittent link which is adapted, upon swinging movement, to engage said bolt and trip it from latehed to unlatched position; outside unlatched means for swinging said operating lever; locking means including a trip lever which is movable between locked and unlocked positions and a free wheeling link mounted on said trip lever for bodily movement therewith and for pivotal movement relative thereto, said free wheeling link coupling said intermittent link to said operating lever when the trip lever is in said unlocked position and uncoupling said intermittent link from said operating lever when the trip `lever is in locked position; and inside unlatching means comprising a pivotally mounted lever directly engageable with said bolt to trip the bolt from latched to unlatched position.

4. A vehicle door latch of the character described, comprising: a bolt movable between latched and unlatched positions; spring means yieldably holding said bolt in latched position; operating `means including a pivotally mounted operating lever and an intermittent link which is pivoted coaxially with and adjacent a surface of said operating lever `and is adapted, upon swinging movement, to engage said bolt 'and move it from latched to unlatched position; outside unlatching means for swinging said operating lever; locking means including a trip lever which is movable between iocked and unlocked positions and a free wheeling link mounted on said trip lever for bodily movement therewith and for pivotal movement relative thereto, said free wheeling link coupling said intermittent link to said operating lever when the trip lever is in unlocked position and uncoupling said intermittent link from said operating lever when the trip lever is in locked position; and inside unlatching ymeans comprising a pivotally mounted lever adapted, upon swinging movement, to directly engage said bolt and move it from latched to unlatched position.

5. A vehicle door latch of the character described, comprising: a bolt comprising two toggle links movable relative to each other between latched and unlatched positions; spring means yieldably holding said bolt in latched position; operating means including a pivotally mounted operating lever, and an intermittent link which is pivoted coat-:tally with and adjacent a surface of said operating lever and is adapted, upon swinging movement, to engage said bolt and trip it `from latched to unlatched position; outside unlatching means for swinging said operating lever; and locking means including a pivotally mounted trip lever which is swingable between locked and unlocked positions and a `free wheeling link pivotally mounted on said trip lever for bodily movement therewith and for pivotal movement relative thereto, said free wheeling link coupling said intermittent link to said operating lever when the trip lever is in unlocked position and uncoupling said intermittent link from said operating lever when the trip lever is in locked position.

6. Apparatus of the character claimed in claim 5, wherein said intermittent link has a slot extending radially of said pivotal axis and said operating lever has a slot with a stem portion lying in registry with the slot in said intermittent link and an arrn portion extending substantially at a right angle from said stem portion, said attac-se free wheeling link having a lug extending through the slots in said intenmittent link and operating lever, said lug being out of registry with the arm portion of the slot in the operating lever when the trip lever is in unlocked position and being in registry with said arm portion when the trip lever is in locked position.

7. A `vehicle door latch of the character described, comprising: a bolt movable between latched and unlatched positions; spring means yieldnbly holding said bolt in latchcd position; operating means including `a pivotally mounted operating lever and an intermittent link which is pivoted coaxially with and adjacent a surface of said operating lever and is adapted, upon swinging movement, to engage said bolt and move it from latched to unlatched position; outside unlatching means for swinging said operating lever; locking means including a pivotally mounted trip lever which is swingable between locked and unlocked positions and a free wheeling link pivotally mounted on said trip lever for bodily movement therewith and for pivotal movement relative thereto, said free wheeling ilink coupling said intermittent `link to said operating lever when the trip lever is in unlocked position and uncoupling said intermittent link from said operating lever when the trip lever is in locked position, said intermittent link having a slot therein extending radially of said pivotal axis and said operating lever having a slot with a stem portion lying in registry with the slot in said intermittent link and an arm portion extending substantially at a right angle from said stern portion and lying on en are drawn about snid pivotal axis, said free wheeling link having a lug extending through the slots in said intermittent link and operating lever and lying out of registry with the arm portion of the slot in the operating lever when the trip lever is in unlocked position and in registry with said arm portion when the trip lever is in locked position; and inside unlatching means comprising a lever adapted to directly engage said bolt when the trip lever is in unlocked position.

8. A vehicle door latch of the character described, including: a holt comprising two toggle links movable relative to each other between latched and unlatched positions; means mounting said bolt for movement as a unit from operative position to an out-of-the-way position; spring means yicldably urging said bolt toward operative position; operating means including an intermittent link which is adapted, upon movement, to engage said bolt and trip it from latched to unlatched position; outside unlatching means for said operating means; locking means including a pivotnlly mounted trip lever which is movable between locked and unlocked positions and means on said trip lever for coupling said intermittent link to said outside unlatching means when the trip lever is in unlocked position and uncoupling said intermittent link from said unlatching means when the trip lever is in locked position; an undogging lever pivoted coaxially with said trip lever; a centering spring yieldably connecting said undogging lever to said trip lever whereby the two levers normally pivot together, said undogging lever having a portion lying in the path of movement of said bolt whereby said locking lever is moved from locked position to unlocked position upon movement of said bolt to unlatched position or to out-of-the-way position; and means for blocking said trip lever against movement to unlocked position, whereby said undogging lever moves relative to the trip lever against the force of said centering spring upon movement of said bolt to unlatched position or to out-of-the-way position.

9. A vehicle door latch of the character described, including: a bolt comprising two toggle links movable relative to each other between latched and unlatched positions; means mounting said bolt for movement as a unit from operative position to an out-of-the-way position; spring means yieldably urging said bolt toward operative position; operating means including an operating lever and an intermittent link which is adapted, upon movement, to engage said bolt and trip it from latched to unlatched position; outside unlatching means for swinging said operating lever; locking means including a pivotally mounted trip lever which is movable between locked and unlocked positions and a free wheeling link mounted on said trip lever, said free wheeling link coupling said intermittent link to said operating lever when the trip lever is in unlocked position and uncoupling said intermittent link from said operating lever when the trip lever is in locked position; an undogging lever pivoted coaxially with said trip lever; a centering spring yicldably connecting said undogging lever to said trip lever whereby the two levers normally pivot together, said undogging lever having a portion lying in the path of movement of said bolt whereby said locking lever is moved from locked position to unlocked position upon movement of said bolt to unlatched position or to out-of-the-way position; and means for blocking said trip lever against movement to unlocked position, whereby said undoggintg lever moves relative to the trip lever against the force of said centering spring upon movement of said bolt to unlatched position or to out-of-thc-way position.

l0. A vehicle door latch of the character described, including: ia bolt comprising two toggle links movable relative to each other between latched and unlatched positions, a spring connected between said links and yieldably urging said links toward latched position', means mounting said bolt for movement as a unit from operative position to an outoE-theway position; spring means yieldubly urging said bolt toward operative position; operating means including a pivotally mounted operating lever and an intermittent link which is pivoted coaxially with and adjacent a surface of said operating lever and is adapted, upon swinging movement, to engage said bolt and trip it `from latched to unlatched position; outside unlntching means for swinging said operating lever; locking means including a pivotally mounted trip lever which is movable between locked and unlocked positions and a free `wheeling link mounted on said trip lever, said free wheeling link coupling said intermittent link to said operating lever when the trip lever is in unlocked position and uncoupling said intermittent link from said operating `lever when the trip lever is in locked position; an undogging lever pivoted coaxially with said trip lever; a centering spring yieldably connecting said undogging lever to said trip lever whereby the two levers normally pivot together, said undogging lever having a portion lying in the path of movement of said bolt whereby said locking lever is moved from locked position to unlocked position upon movement of said bolt to unlatched position or to out-of-the-way position; means for blocking said trip lever against movement to unlocked position, whereby said undogging lever moves relative to the trip lever against the force of said centering spring upon movement of said bolt to unlatched position or to out-of-theway position; `and inside unlatching means comprising a pivotally mounted lever adapted, upon swinging movement, to directly engage said bolt and trip it from latched to unlatched position.

ll. A vehicle door latch of the character described, including: a bolt comprising two toggle links movable relative to each other between latched and unlatched positions; a spring connected between said toggle links and yieldably urging said toggle links toward latchcd position; means mounting said bolt for imovement as a unit from operative position to an out-of-the-way position; spring means yieldably urging said bolt .toward operative position; operating means including a pivotally mounted operating lever and an intermittent lmk which is pivoted coaxially with and adjacent a surface of said operating lever and is adapted, upon swinging movement, to engage said bolt and trip it from latched to unlatched position; outside unlatching means for svinging sind operating lever; locking means including a pivotally mounted trip lever which is swingable between locked and unlocked positions and a free wheeling iini; pivotslly mounted on said trip lever, said free wheeling limi; coupling seid intermittent link to said operating lever when the trip lever is in unlocked position and uneoupling said inermittent link from said operating lever when the tri; lever is in locked position, intermitent iinl; having a slot therein extending radially of said pivotal axis and seid operating lever having a slot with a stem portion lying in registry with tile slot in said intermittent link `mel an erm portion extending substzinially et a riYM angle from said stem portion, said free wheef j having a lug extending through the slots in said intermittent link and operating lever, said lug being out of registry with the arm portion of the siot in the operating lever when the trip lever is in unlocked position and in registry with said arm portion when the trip lever i in locked position; an undogg-,ing lever pivoted eoaxioliy with said trip lever; a centering spring yieldably connecting said undogging lever to said trip lever whereby the two levy, nelly pivot together, d undogging lever having :t portion in tite path of movement of said bolt wheref d looking lever is moved from loci-ed position to eeked position upon movement of said belt to unsaid lug into the arm portion of the slot in said lg lever whereby said trip lever is blocked against age i.

References Citefl in the file of this patent UNlTED STATES PATENTS 2603.229 Vv/ise Aug. 26, 1952 2,653,382 Allen Nov. ll), 1953 UNITED STATES PATENT OFFICE CERTIFICATE OF CORRECTION Patent No. 3,112,946 December 3, 1963 James H. Werng et a1.

It is hereby certified that error appears n the above numbered patent requiring correction and that the said Letters Patent should read as corrected below.

Column 1, line 17, for "latching" read latch column 4, line 12, for "turing" read turning n; column 6, line 17, for "unlatched" read unlatchng Signed and sealed this 13th day of October 1964.

SEAL Attest:

EDWARD J. BRENNER Commissioner of Patents ERNEST W. SWIDER Attesting Officer 

1. A VEHICLE DOOR LATCH OF THE CHARACTER DESCRIBED, COMPRISING: A BOLT MOVABLE BETWEEN LATCHED AND UNLATCHED POSITIONS; MEANS YIELDABLY HOLDING SAID BOLT IN LATCHED POSITION; OPERATING MEANS INCLUDING AN OPERATING LEVER AND AN INTERMITTENT LINK WHICHIS ADAPTED, UPON MOVEMENT, TO ENGAGE SAID BOLT AND MOVE IT FROM LATCHED TO UNLATCHED POSITION; OUTSIDE UNLATCHING MEANS FOR SWINGING SAID OPERATING LEVER; AND LOCKING MEANS INCLUDING A TRIP LEVER WHICH IS MOVABLE BETWEEN LOCKED AND UNLOCKED POSITIONS AND A FREE WHEELING LINK MOUNTED ON SAID TRIP LEVER FOR BODILY MOVEMENT THEREWITH AND FOR PIVOTAL MOVEMENT RELATIVE THERETO, SAID FREE WHEELING LINK COUPLING SAID INTERMITTENT LINK TO SAID OPERATING LEVER WHEN THE TRIP LEVER IS IN UNLOCKED POSITION, AND UNCOUPLING SAID INTERMITTENT LINK FROM SAID OPERATING LEVER WHEN THE TRIP LEVER IS IN LOCKED POSITION. 